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Sites and Monuments Record · Ireland

Crannog

Lassanny, County Mayo, Ireland

Ordnance Survey six-inch map, 2nd edition (1888–1915) covering the location of Crannog, Lassanny, County Mayo, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1915), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Townland
Lassanny
County
Mayo
Country
Ireland
First-edition OS map
Indicated
Latest-edition OS map
Not indicated
Coordinates
53.76349, -8.82356
SMR number
MA092-082----

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

4 historical maps cover this location, the earliest the 1753 map "Mappa geographica Regni Hiberniae" (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1753 · Mappa geographica Regni Hiberniae (David Rumsey Map Collection, Stanford Libraries)
  • 1790 · Composite: Ireland. (David Rumsey Map Collection, Stanford Libraries)
  • 1869 · Ireland. (David Rumsey Map Collection, Stanford Libraries)
  • 1891 · Ireland 16 (David Rumsey Map Collection, Stanford Libraries)

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This record in the National Monuments Service's Historic Environment Viewer ↗

The National Monuments Service's description

A small circular island (diam. c. 15m) is shown on the 1838 OS 6-inch map in middle of an unnamed lake which straddles the townland boundary between Knockaunacat and Lisanny. It is not shown on later map editions where reduced lake levels are evident. Modern drainage schemes have reduced the lake to an expanse of marsh ground, too wet and unstable to allow inspection.

Compiled by: Jane O’Shaughnessy

Date of upload: 20 May 2022

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Sites and Monuments Record data: National Monuments Service, Government of Ireland, licensed under CC BY 4.0. Record text is reproduced unchanged. National Monuments Service, Government of Ireland · CC BY 4.0
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